I upgraded from LMDE to LMDE 2 Betsy, and almost everything worked fine. But caja-dropbox was not working for me. I could not see the Dropbox icons in the Dropbox directory in Caja (the MATE file manager), and I did not have the Dropbox options when I clicked the right mouse over a file (for example, to share it). I had the same problem with Debian Jessie, which is the base of LMDE 2.